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As luck would have it, Kenne Bell was also testing a six-speed Challenger. Run in stock trim, the manual car pumped out 376 hp and 375 lbs/ft of torque. These jumped to 537 hp and 510 lbs/ft with the blower pumping out 8 psi. With the blower wicked up to 20 psi, the otherwise stock Hemi produced 765 wheel hp.